On Board Diagnosis Logic
To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the air fuel ratio (A/F) sensor 1 signal is not inordinately low.
DTC DETECTING CONDITION AND POSSIBLE CAUSE
| DTC No. | Trouble diagnosis name | DTC detecting condition | Possible Cause |
|---|---|---|---|
| P0131 0131 (Bank 1) |
Air fuel ratio (A/F) sensor 1 circuit low voltage |
|
|
| P0151 0151 (Bank 2) |